Backend and APIs

19,654 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

gospec

1057

singchia/gospec

Skill Claude CodeCodex

A Chinese-language guide for building and maintaining Go backend services. It covers how to organize code, design APIs, store data, test changes, deploy services, and handle operations.

not rated 7 6mo ago A 155 tokens original MIT

bun-api

1058

dmythro/agent-skills

Skill Claude CodeCodex

Bun runtime API reference for TypeScript scripts. Covers Bun.serve() HTTP/HTTP/2 server with routes and WebSockets, fetch() transport options, proxies and Bun.FetchSession connection pools, Bun.ModuleGraph multi-instance apps, Bun.file(), Bun.write(), Bun.$() shell, Bun.spawn(), Bun.Glob, Bun.env, bun:sqlite…

not rated 7 changed 15d ago A SkillSpector: warn 265 tokens original MIT

echo-development

1059

andersonlemesc/Oryntra

Skill Claude CodeCodex

Develops real-time broadcasting with Laravel Echo. Activates when setting up broadcasting (Reverb, Pusher, Ably); creating ShouldBroadcast events; defining broadcast channels (public, private, presence, encrypted); authorizing channels; configuring Echo; listening for events; implementing client events (whisper)…

not rated 7 7d ago A 94 tokens original Apache-2.0

datastar

1060

VimCommando/datastar-skills

Skill Codex

Datastar-first web app development skill for backend-driven HTML over SSE, signal design, data- attribute usage, and Datastar interaction patterns. Use when building, reviewing, debugging, refactoring, or planning Datastar apps; when choosing what belongs in backend state vs signals; when authoring data- attributes or…

not rated 7 7mo ago A 80 tokens original MIT

build-mcp-server

1063

backnotprop/build-mcp-server

Skill Codex

Design, scaffold, audit, and upgrade Model Context Protocol servers. Use when the user asks to build or migrate an MCP server, adopt MCP 2026-07-28, add dual-era support, create an MCP integration, expose an API or data source through MCP tools/resources/prompts, add OAuth or API-key auth to an MCP endpoint, run an…

not rated 7 changed 1mo ago A 99 tokens

openapi-mcp-gateway

1064

mroops0111/openapi-mcp-gateway

Plugin Claude Code

Bundles 1 skill · 119 tokens together

Find or generate an openapi-mcp-gateway config for any API. Acquire its OpenAPI spec, scope operations with policy, and shape tools with JSONata.

not rated 7 5d ago A tokens not measured original MIT

wb-mcp-server

1065

DeviceIngineering/wb-mcp-server

MCP server Claude CodeCodexCursor +2

MCP server for Wildberries Seller API: 202 tools for products, prices, orders, ads, supplies, reviews, finance and analytics. Runs locally from the wb-mcp-server Python package. Needs 2 environment variables to run.

not rated 7 +2 2mo ago A tokens not measured original MIT

aruba-fatture-mcp

1066

MarckDev/aruba-fatture-mcp

MCP server Claude CodeCodexCursor +2

MCP server "aruba-fatture-mcp" as configured in MarckDev/aruba-fatture-mcp. Runs locally from the aruba-fatture-mcp npm package.

not rated 7 3mo ago A tokens not measured

mailbox

1067

psyb0t/docker-mailbox

Plugin Claude Code

Bundles 1 skill · 42 tokens together

Scoped IMAP/SMTP access over HTTP and MCP: read, organize, draft, reply and send mail.

not rated 7 +2 changed 17d ago A tokens not measured WTFPL

mcp-graphql-enhanced

1068

letoribo/mcp-graphql-enhanced

MCP server Claude CodeCodexCursor +2

GraphQL gateway for LLMs. Handles huge GitHub GraphQL & @neo4j/graphql schemas without crashing. Runs locally from the @letoribo/mcp-graphql-enhanced npm package. Needs 7 environment variables to run.

not rated 7 today A tokens not measured original MIT

auth-patterns

1069

kouroshez/coding-os

Skill Claude CodeCodex

Design authentication and authorization for the project's stack — JWT vs server sessions, refresh-token rotation, OAuth 2.1 + PKCE, magic links, passkeys (WebAuthn), TOTP/2FA + backup codes, RBAC vs ABAC vs ReBAC, secure cookie flags, mobile token storage. Use when adding sign-in to a new app, designing the token…

not rated 7 +1 today A SkillSpector: warn 118 tokens original Apache-2.0

api-harness

1070

sabbour/agentweaver

Skill Claude CodeCodex

Use the API harness to drive Agentweaver through its REST API, capture the complete request/response evidence, and emit a normalized agentweaver.persona-judge-verdict/v1 JSON verdict. It is for backend/API end-to-end validation; use the UI or MCP harness for those surfaces.

not rated 7 changed 1mo ago A 0 tokens original MIT

mymcp

1071

gmitch215/MyMCP

Plugin Claude Code

Bundles 4 MCP servers

MCP servers generated from OpenAPI descriptions, for a set of public APIs.

not rated 7 9d ago A tokens not measured original MPL-2.0

pixeltable

1072

pixeltable/pixeltable-skill

Plugin Claude Code

Bundles 1 skill, 2 commands, 2 agents, 2 hooks · 363 tokens together

Multimodal RAG, video search, image similarity search, agent memory, and embeddings stored with your data. Tables, computed columns, vector search, and video, audio, image, and document pipelines.

not rated 6 changed 6d ago A tokens not measured original Apache-2.0

project-structure

1073

samihalawa/whatsapp-go-mcp

Cursor rule Cursor

This is a Go implementation of a WhatsApp Web Multidevice API that allows you to interact with WhatsApp through HTTP APIs.

not rated 6 11mo ago A 5 tokens original MIT

portkey-admin-mcp

1074

CodesWhat/portkey-admin-mcp

MCP server Claude CodeCodexCursor +2

Portkey Admin API MCP server with current coverage and Prisma AIRS interoperability guidance. Runs locally from the portkey-admin-mcp npm package. Needs 3 environment variables to run.

not rated 6 yesterday A tokens not measured original MIT

magento-skills

1075

staksoft/magento-claude-skills

Plugin Claude Code

Bundles 3 skills · 718 tokens together

Claude skills for Magento 2 / Mage-OS / Adobe Commerce development: module scaffolding, plugin/observer/DI conventions, declarative schema, REST/GraphQL, CLI/cron, PHPUnit testing, Hyva theme development (Alpine/Tailwind/Magewire), debugging playbooks, and storefront performance audits.

not rated 6 +1 4mo ago A tokens not measured original MIT

anythink

1076

anythink-cloud/anythink-cli

Plugin Claude Code

Bundles 1 skill, 1 MCP server · 199 tokens together

Build and operate an Anythink backend — the all-in-one backend-as-a-service (typed data modelling with relationships, row/field-level security, full-text + semantic + geo search, RBAC, a workflow/automation engine, third-party integrations, file storage, and payments) — through the Anythink MCP server or anythink CLI.

not rated 6 yesterday A tokens not measured original MIT

microtech-graphql

1077

microtech-gmbh/microtech-skills

Skill Claude CodeCodex

Erstellt und optimiert GraphQL-Queries und Mutations fuer die microtech ERP microtech ERP. Deckt den gesamten ERP-Datenbestand ab: Artikel, Warengruppen, Stuecklisten, Adressen mit Anschriften und Ansprechpartnern, Vorgaenge (Angebote, Auftragsbestaetigungen, Lieferscheine, Rechnungen, Gutschriften, Bestellungen)…

not rated 6 7mo ago A 337 tokens original MIT

kyle641320/Scout4j

Skill Claude CodeCodex

General-purpose coding-agent workflow for Java enterprise backend projects. Use when implementing features, fixing bugs, refactoring, reviewing code/PRs, adding fields/APIs/database schema changes, changing REST/RPC endpoints, repository/mapper persistence, MQ/CDC consumers, transaction boundaries, JUnit/Mockito/Spock…

not rated 6 5mo ago A 95 tokens original MIT

climate-generator

1079

disk0Dancer/climate

Skill Claude CodeCodex

Generate Go CLIs from OpenAPI 3.x specs with climate, inspect generated CLIs, and emit Markdown skill prompts so those CLIs can be attached to agent workflows.

not rated 6 3mo ago A 39 tokens original Apache-2.0

nextjs-redis-cache

1080

leejpsd/nextjs-cache-handler

Skill Claude CodeCodex

Wire and operate @leejpsd/nextjs-cache-handler — Redis caching for self-hosted Next.js 15/16 (ISR cacheHandler + 'use cache' cacheHandlers). Use when adding Redis caching to a Next.js app, choosing or wiring cache handlers, debugging cache invalidation (revalidateTag / updateTag / revalidatePath, stale or…

not rated 6 2mo ago A 119 tokens original MIT

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: